/* eslint-disable */
// This Webpack plugin ensures `npm install <library>` forces a project rebuild.
// We’re not sure why this isn't Webpack's default behavior.
// See https://github.com/facebook/create-react-app/issues/186.

'use strict'

class WatchMissingNodeModulesPlugin {
  constructor(nodeModulesPath) {
    this.nodeModulesPath = nodeModulesPath
  }

  apply(compiler) {
    compiler.hooks.emit.tap('WatchMissingNodeModulesPlugin', compilation => {
      const missingDeps = [...compilation.missingDependencies]
      const nodeModulesPath = this.nodeModulesPath

      // If any missing files are expected to appear in node_modules...
      if (missingDeps.some(file => file.includes(nodeModulesPath))) {
        // ...tell webpack to watch node_modules recursively until they appear.
        compilation.contextDependencies.add(nodeModulesPath)
      }
    })
  }
}

module.exports = WatchMissingNodeModulesPlugin
